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AMD Radeon HD 7640G + HD 7670M Dual Graphics

The AMD Radeon HD 7640G + HD 7670M Dual Graphics is the combination of a integrated AMD Radeon HD 7640G APU processor graphics card and a dedicated entry level AMD Radeon HD 7670M graphics card in CrossFire combination. It is called AMD Dual Graphics or asymmetric CrossFire and uses AFR (Alternate Frame Rendering) to render different frames on the two graphic cores. Therefore the combination also suffers from micro stuttering (different spaces between two images lead to stuttering altough the framerate is high enough for fluent gaming with only one GPU).

The performance of the Dual Graphics solution depends greatly on the driver support for the used games. In some games the performance may even degrade by 10-15% compared to using only the APU graphics card. Therefore, due to the micro stuttering and performance problems, Dual Graphics may impose more problems than bring performance gains. Only in a best case scenario the performance is similar to the GeForce GT 635M.

The features like PureVideo HD (UVD3) or OpenCL support are similar to the two graphics cards.

As both graphics cards are rendering frames, the power consumption is clearly higher than using only one GPU.

Radeon HD 7600M Series

Radeon HD 7690M XT compare 480 @ 0.73 GHz128 Bit @ 3600 MHz
Radeon HD 7690M compare 480 @ 0.6 - 0.73 GHz128 Bit @ 3600/1800 MHz
Radeon HD 7660G + HD 7670M Dual Graphics compare 862 @ 0.69 GHz128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7670M Dual Graphics 736 @ 0.66 GHz128 Bit @ 1800 MHz
Radeon HD 7520G + HD 7670M Dual Graphics compare 736 @ 0.66 GHz128 Bit @ 1800 MHz
Radeon HD 7670M compare 480 @ 0.6 GHz128 Bit @ 1800 MHz
Radeon HD 7650M compare 480 @ 0.45 - 0.55 GHz128 Bit @ 1800 MHz
Radeon HD 7630M compare 480 @ 0.45 GHz128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7610M Dual Graphics compare 656 @ 0.66 GHz128 Bit @ 1800 MHz
Radeon HD 7610M compare 400 @ 0.45 GHz128 Bit @ 1600 MHz
ArchitectureTerascale 3
Pipelines736 - unified
Core Speed655 / 600 MHz
Memory Speed1800 MHz
Memory Bus Width128 Bit
Shared Memoryyes
APIDirectX 11, Shader 5.0, OpenGL 4.2
technology40 nm
Notebook Sizemedium sized
Date of Announcement15.05.2012

Benchmarks

Performance Rating - 3DMark 11 + Fire Strike + Time Spy
0.3 pt (1%)
3DMark Vantage
3DM Vant. Perf. total +
3DM Vant. Perf. GPU no PhysX +
3DMark 06 3DMark 06 - Standard 1280x1024 +
3DMark 06
min: 7090     avg: 8122     median: 8451.5 (11%)     max: 8493 Points
Cinebench R10 Cinebench R10 Shading (32bit) +
Cinebench R11.5 Cinebench R11.5 OpenGL 64 Bit +
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

Game Benchmarks

The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailed information on the benchmark results, click on the fps number.

Crysis 3

Crysis 3

2013
low 1024x768
28.7  fps    + Compare
med. 1366x768
15  fps    + Compare
high 1366x768
10.5  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
low 1024x768
99.2  fps    + Compare
med. 1366x768
45.9  fps    + Compare
high 1366x768
35.9  fps    + Compare
» With all tested laptops playable in detail settings high.
low 1024x768
19.9  fps    + Compare
med. 1366x768
18.7  fps    + Compare
high 1366x768
13.4  fps    + Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Fifa 13

Fifa 13

2012
low 1024x768
130.8 133 ~ 132 fps    + Compare
med. 1366x768
100.9 108 ~ 104 fps    + Compare
high 1366x768
99.4 103 ~ 101 fps    + Compare
ultra 1920x1080
65 71 ~ 68 fps    + Compare
» With all tested laptops playable in detail settings ultra.
low 1024x768
34.2 37.4 ~ 36 fps    + Compare
med. 1366x768
26.7  fps    + Compare
high 1366x768
25.5  fps    + Compare
» With most tested laptops playable in detail settings low.
low 1024x768
78.5 96 98 ~ 91 fps    + Compare
med. 1366x768
74 74 ~ 74 fps    + Compare
high 1366x768
65.4 70 ~ 68 fps    + Compare
ultra 1920x1080
43.3 48 ~ 46 fps    + Compare
» With all tested laptops playable in detail settings ultra.
Anno 2070

Anno 2070

2011
low 1024x768
69 74.9 90 ~ 78 fps    + Compare
med. 1366x768
28 31.8 ~ 30 fps    + Compare
high 1366x768
19 20.6 ~ 20 fps    + Compare
» With all tested laptops playable in detail settings low.
low 1280x720
35.1  fps    + Compare
med. 1366x768
30.8  fps    + Compare
high 1366x768
25.1  fps    + Compare
» With all tested laptops playable in detail settings low.
F1 2011

F1 2011

2011
low 800x600
59  fps    + Compare
med. 1024x768
37  fps    + Compare
» With all tested laptops playable in detail settings med..
low 1024x768
95.5  fps    + Compare
» With all tested laptops playable in detail settings low.
Dirt 3

Dirt 3

2011
low 800x600
70.3  fps    + Compare
med. 1024x768
41.3  fps    + Compare
» With all tested laptops playable in detail settings med..
lowmed.highultraQHD4K
Crysis 328.71510.5
Dead Space 399.245.935.9
Hitman: Absolution19.918.713.4
Fifa 1313210410168
Dirt Showdown3626.725.5
Diablo III91746846
Anno 2070783020
The Elder Scrolls V: Skyrim35.130.825.1
F1 20115937
Deus Ex Human Revolution95.5
Dirt 370.341.3
< 30 fps
< 60 fps
< 120 fps
≥ 120 fps
2
3
5
1
3
5
2
5
1
2

1
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For more games that might be playable and a list of all games and graphics cards visit our Gaming List

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» Notebook Gaming List
Playable games for each graphics card and their average FPS results.

Class 0

Arc A380

Class 1

Class 2

Radeon PRO W6600M *

Class 3

UHD Graphics 32EUs
UHD Graphics 750

Class 4

Class 5

* Approximate position of the graphics adapter

> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Benchmarks / Tech > Comparison of Laptop Graphics Cards > AMD Radeon HD 7640G + HD 7670M Dual Graphics
Klaus Hinum (Update: 2017-09- 5)